brooke



.I "(Mbdel.) 2 Sheets-Sheet 1.

. R. G. BROOKE.

INJEGTOR,

N0.534,194. Patentedreb. 12,1895.

- www Imran VSitratres PATENT l Frisia ROBERT GRUNDY BROOKE, OFBLACKPOOL, ENGLAND.

INJ no1-OR.`

SPECIFICATION forming part of Letters Patent No. 534,194, dated February12, 1 895.

Application filed October l5, 1892. ,Serial No. 448,966. (Model.)Patcntedin England April l2, 1892, No. 7,039, and in Canada p May15,1893, No.42,909. j

lfb @ZZ whom t may concern:

Be it known that I, ROBERT GRUNDY BROOKE, a subject of the Queen ofGreat Britain and Ireland, residing at Blackpool, in

the county of Lancaster, England, have invented Improvements inInjectors, (for which Letters Patent have been' obtained in GreatBritain, No. 7,039, dated April12, 1892, and in Canada, No. 42,909,dated May 15, 1893,) of which the following is a specification.

This invention has reference to injectors of the type known ascombination injectors, in

' which several boiler fittings usually separate and distinct from theinjector,"are combined in the one apparatus. g

Injectors of this class have usually been fixed on the back plate oflocomotive fire boxes, but it is found that rit is not alwayspracticable or convenient to fix injectors on this part of the boiler.An object of my present invention is to construct an injector of thetype referred to in such a manner that it can be conveniently fixed toany part of the Yboiler, andrso that its various parts can be moreconveniently taken apart than has hitherto been usual. For this purposeI construct an injector of `the kindreferred to with a selfcontainednon-return or check valve having its ease so formed and arranged inrelation to .j so

a specially formed delivery passage that the seat of the saidl valve, aswell as the valve itself,'can be made removable without breaking any ofthe injector joints or connections;

'that the injector can be iixed with its body near to the boiler shell;and that the combining and delivery nozzles can it' desired be readilywithdrawn from lthe delivery end of the injector casing in a manner wellunderstood.

In the accompanying drawings, Figure 1 is a horizontal section on theline A B Fig. 2; and Fig. 2 is a vertical cross section to a large scaleon the line Ol D Fig-1, of an injectorof the 4type referred to,constructed according to this invention. Y y

1 is the injector casing formed with a Aiiange 2 by means of which itcan be fixed to a boiler shell 3 with its steam inlet 4 and deliveryoutlet 5 directly opposite steam and. delivery pipes 6 and 7respectively arranged within the boiler andso that the body of theinjector can be close up to the boiler.

8 is the self-contained non-return or check valve arranged within a case9 and serving to check the return 'fiow ot` Water through the speciallyconstructed delivery passage 10.

11 is the valve seat.

The valve case is arranged at vthe side of the injector casing away fromthe flange 2, and the delivery passage lO is arranged transversely tothe delivery nozzle 12 Iso that the water from the delivery nozzle willfirst pass outwardly and away from the final delivery outlet 5 until'itpasses through the valve case. k9, whence it will pass back in adirection toward the final delivery outlet and thence into the boiler.By this construction it will be seen that the valve seat 11 for thenon-return valve S can be formed on a tubular part 1 1i adapted to bescrewed into the bottom of the valve case so that the valve seat and thenonreturn valve can be readily removed fon refacing or other purpose andthen be replaced, without breaking any of the injector joints orconnections.

The injector may as shown be provided with a stopvalvel adapted whenmoved onto its seat 13 to close the delivery passage 10 at a pointbetween the non-return valve 8 and the boiler so that the saidnon-return valve together with its seat, can then be removed while theboiler is under steam.

The valve case 9 containing the non-return valve 10, and it may be alsothe stop' valve, instead of being made in one with the main body of theinjector casing as shown, may be valve seat for the non-return valve maybe cast in one with the Wall of the chamber and the valve be introducedfrom the top through an opening normally closed by a plug.

The delivery nozzle -l2ktogether with the part 12* of the combiningnozzle, is screwed into the injector casing at 1a which is formed at theadjacent end with an opening normally closed by a screw cover 14 byremoving which the delivery and combiningA nozzles can after shuttingoit the supply of steam to the steam nozzle 15 be readily withdrawn fromthe in- IOO j ector casing Without disturbing any other portions of theinjector.

The injector casing instead of being ccnstructed with a single fiange 2formed with steam inlet and delivery openings 4 and 5 ar ranged neartogether as shown, can be constructed with separate steam and deliveryiianges as indicated by dotted lines so arranged that each of them canbe fastened direct to the boiler as well understood.

The injector described may be provided as shown, with a steam valve 16,having its axis arranged co-axially with that of the injector; Thisvalve is formed in one with or carried by the regulating spindle 17which carries the screw 17 for regulating the position of thc steamnozzle 15 and the adjacent end of which nozzle is formed with a seat at15 for. the steam valve as well understood.

1. In an injectorof the type herein referred to a non-return valvearranged to control the ow of water through the delivery passage, andhaving a seat capable of being removed without breaking any of theinjector joints or connections substantially as herein described for thepurpose specified.

2. An injector of thetypeherein referred to constructed with a checkvalve arranged to control the flow of water through the deliverypassage, a removable seat therefor, and a stop valve arranged to closethe delivery passage at a point between the said check valve and thedelivery outlet substantially as herein described.

3. An injector of the type herein referred to having a delivery passageextending transversely around the delivery nozzle so that water issuingfrom said nozzle will first take a direction away from the iinaldelivery outlet and afterward a direction toward such outlet, a valvechamber formed in a part of such passage, and a check valve located insaid chamber, substantially as herein described for the purposespecified.

4. An injectorof the type herein referred to having a ilange 2 withsteam inlet and delivcry outlet, a delivery passage extending from andtransversely around the delivery nozzle, a valve chamber formed in saidpassage at a point of the injector casing opposite to said flange, acheck valve located in said valve chamber and a removable tubularsupport formed with a valve seat and screwed through the deliverypassage and injector casing substantially as herein described for thepurpose specified.

In testimony whereof I have signed iny name to this specification in thepresence of two subscribing witnesses.

ROBERT GRUNDY BROOKE.

Witnesses:

FREDERICK WILLIAM TOBITE, 7 9 Orlando Sl., Bolton.

ARTHUR HALL, 49 Gladstone Sl., West Gorlon, Manchester.

